A CNC drilling machine for processing hardware accessories

Abstract

The present invention relates to a CNC drilling machine for processing hardware accessories applied in the field of hardware processing equipment, comprising a workbench, a clamp and a first slide rail are installed on the upper end of the workbench, a lifting mechanism is slidably installed on the first slide rail, and a drilling mechanism is slidably installed on the side of the lifting mechanism close to the clamp; a first driving structure is also installed on the upper end of the workbench, and the first driving structure is located on the side of the lifting mechanism away from the drilling mechanism; a driven block is slidably installed on the side of the lifting mechanism away from the drilling mechanism, and the first driving structure and the driven block structure are adopted to realize the position of a certain drilling mechanism being adjusted individually and the positions of multiple drilling mechanisms being adjusted at the same time, thereby realizing an automatic and flexible adjustment effect. Compared with manual adjustment by pulling out a positioning bolt, the automatic adjustment distance control is more precise and the adjustment is more convenient, which is conducive to accelerating the adjustment efficiency and improving the yield rate of the finished product.

Description

Technical Field

[0001] The invention relates to a numerical control drilling machine, in particular to a numerical control drilling machine for processing hardware accessories applied in the field of hardware processing equipment. Background Art

[0002] A drilling machine refers to a machine tool that mainly uses a drill to make holes on a workpiece. Usually, the drill rotates as the main motion, and the drill moves axially as the feed motion. The drilling machine has a simple structure and relatively low processing accuracy. It can drill through holes and blind holes. By replacing special tools, it can expand, countersink, ream holes, or perform tapping and other processing. During the processing, the workpiece does not move, and the tool moves. The center of the tool is aligned with the center of the hole, and the tool rotates. The characteristic of a drilling machine is that the workpiece is fixed and the tool rotates.

[0003] In the existing process of drilling holes on hardware by drilling machines, the workpiece is usually placed manually on the drilling die of the drilling machine, and then taken out manually after the drilling machine completes the drilling of the hardware. This is labor-intensive, labor-intensive, and inefficient. In addition, since the drill bit of the drilling machine needs to be continuously flushed with coolant when drilling holes on hardware, the operator's hands are immersed in the coolant for a long time, which poses a health and safety hazard to the operator.

[0004] In order to solve the problem that CNC drilling machines cannot automatically transport workpieces, a CNC drilling machine with automatic workpiece transportation in the market adopts a linear module combined with a manipulator design, which has a certain market share.

[0005] The specification of Chinese patent CN109894647B discloses a CNC drilling machine with automatic workpiece conveyance, which is a processing equipment for drilling holes in hardware parts, including a frame and a material dividing mechanism arranged on the frame, at least four processing stations, a workpiece conveying mechanism and a workpiece detection mechanism, wherein the material dividing mechanism is used to divide a workpiece; each of the processing stations includes a drilling machine and a drilling die arranged on the frame, and the drilling machine is used to perform drilling processing on the workpiece of the drilling die; the workpiece conveying mechanism is used to clamp the workpiece on the material dividing mechanism and convey it to the processing station, or to clamp the processed workpiece from the processing station and convey it to the processing station of the next process. The CNC drilling machine with automatic workpiece conveyance completes the workpiece transfer of each station through the linear module of the workpiece conveying mechanism and the manipulator, which greatly improves the work efficiency; it also solves the problem of the operator's hands being immersed in coolant for a long time.

[0006] The above-mentioned CNC drilling machine and similar CNC drilling machines for hardware accessories processing in the prior art still have certain inconveniences during use. For example, in order to adapt to the drilling spacing requirements of different workpieces, the spacing between multiple drilling mechanisms of the CNC drilling machine (i.e., the above-mentioned drilling machine and drilling membrane) often needs to be adjusted, and the existing adjustment method is mostly to manually pull out the positioning bolt (positioning pin) to release the limit between the lifting mechanism (used to drive the drilling mechanism) and the slide rail where the drilling mechanism is located, and then push the lifting mechanism to move horizontally, and then manually install the positioning bolt to adjust the spacing between the multiple drilling mechanisms to meet the drilling spacing requirements between different workpieces. The adjustment requires experienced operators, and the human influence factors during operation are large, requiring multiple adjustments, and the adjustment process is relatively cumbersome, which seriously affects the switching efficiency of the CNC drilling machine when switching products, and is also prone to adversely affecting the yield rate of the finished workpiece after switching. Summary of the invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is how to achieve automatic and flexible adjustment of the spacing between the various drilling mechanisms, speed up the adjustment efficiency, reduce the factors of human influence, and improve the yield rate of the finished product.

[0008] In order to solve the above problems, the present invention provides a CNC drilling machine for processing hardware accessories, comprising a workbench, a fixture and a first slide rail are installed on the upper end of the workbench, a lifting mechanism is slidably installed on the first slide rail, and a drilling mechanism is slidably installed on the side of the lifting mechanism close to the fixture;

[0009] A first driving structure is also installed on the upper end of the workbench, and the first driving structure is located on a side of the lifting mechanism away from the drilling mechanism;

[0010] A driven block is slidably mounted on one side of the lifting mechanism away from the drilling mechanism, and the driven block is located above the first driving structure and is driven by the first driving structure to move linearly in a horizontal direction;

[0011] A lifting mechanism is installed above the driven block, and the lifting mechanism is used to drive the driven block to rise and fall linearly so that the driven block cooperates with the first driving structure or separates the driven block from the first driving structure;

[0012] A second driving structure is installed above the lifting mechanism, and the second driving structure is used to drive the lifting mechanism to move linearly in a horizontal direction;

[0013] A tie column is installed below the lifting mechanism, and the tie column is used to tighten the lifting mechanism to the first slide rail;

[0014] A linkage structure is installed in the lifting mechanism, a part of which is fixed to one side of the driven block. When the driven block is lifted or lowered, the linkage structure drives the tethering column to press the lifting mechanism against the first slide rail or to move the tethering column away from the first slide rail so that the lifting mechanism and the first slide rail can be slidably connected.

[0015] In the above-mentioned CNC drilling machine for hardware accessories processing, when the drilling mechanism needs to be moved, the staff only needs to drive the driven block to move linearly in the horizontal direction through the first driving structure, and then drive the lifting mechanism to move linearly along the first slide rail to adjust the spacing between the multiple drilling mechanisms. By cooperating the driven block on the rear side of the lifting mechanism where the different drilling mechanisms are located with the first driving structure, it is possible to adjust the position of a certain drilling mechanism individually, and it is possible to adjust the positions of multiple drilling mechanisms at the same time, thereby achieving an automated and flexible adjustment effect. Compared with manual pulling of the positioning bolt for adjustment, the automated adjustment distance control is more precise and the adjustment is more convenient, which is conducive to speeding up the adjustment efficiency and improving the yield rate of the finished product.

[0016] As a further supplement to the present application, the first driving structure includes:

[0017] A second motor, the second motor is fixed on the workbench through a support member, and the second motor is located on one side of the first slide rail;

[0018] A second screw, one end of which is fixed to the output shaft of the second motor, and the other end of which is rotatably connected to a similar support member, wherein the lower end of the support member is fixed to the upper end of the workbench;

[0019] A semi-circular internal thread groove is provided at the lower end of the driven block, and the internal thread groove of the driven block is matched with the thread of the second screw rod.

[0020] As a further supplement to this application, the lifting mechanism includes:

[0021] An electric push rod, the upper end of which is fixed to the lower end of the second driving structure, and the piston rod of which extends downward;

[0022] The electromagnet has an upper end fixed to the lower end of the piston rod of the electric push rod, and the electromagnet magnetically attracts the driven block when power is supplied to the electromagnet.

[0023] As a further supplement to the present application, the second driving structure includes:

[0024] A movable block, the lower end of which is fixed to the upper end of the electric push rod;

[0025] A first screw rod, one end of which has a thread that penetrates through the middle of the movable block and is rotatably connected to the upper end of the support member at the other end of the second screw rod;

[0026] The first motor is fixed to a support member on one side of the second motor, and the output shaft of the first motor is fixed to the other end of the first screw rod.

[0027] As a further supplement to this application, the linkage structure includes:

[0028] A connecting column, one side of the connecting column is fixed to one side of the driven block;

[0029] A cross bar, one end of which is fixed to a side of the connecting column away from the driven block;

[0030] A wedge block is fixed to the lower end of the crossbar and protrudes downward;

[0031] An adjusting block, the adjusting block is fixed to the upper end of the bolt column through a fixing rod;

[0032] There are two adjusting blocks and two bolts, each corresponding to the other. There is a gap between the two adjusting blocks, and the wedge block is located above the gap between the two adjusting blocks.

[0033] Both ends of the bolt column slide through the lifting mechanism and one end thereof is tightly pressed against the inner side of the first slide rail;

[0034] The two adjusting blocks are elastically connected via a tension spring.

[0035] As a further supplement to the present application, a guide rod is fixed between the side walls on both sides of the lifting mechanism, and both ends of the guide rod slide through the two adjustment blocks, and the tension spring is sleeved on the guide rod.

[0036] As a further supplement to the present application, a connecting rod is rotatably connected to one side of the wedge block, and the other end of the connecting rod is rotatably connected to the upper end of the adjustment block. The connecting rod is tilted and has an inclination direction opposite to the inclined surfaces on both sides of the wedge block.

[0037] As a further supplement to the present application, a sliding block is fixed to a side of the movable block away from the lifting mechanism;

[0038] A second slide rail is fixed above the workbench through a support member. The second slide rail is located on a side of the lifting mechanism away from the drilling mechanism, and the slide block is slidably connected to the second slide rail.

[0039] As a further supplement to the present application, a sliding hole is provided on one side of the lifting mechanism close to the driven block for the driven block to connect and slide with the connecting column;

[0040] Both sides of the sliding hole of the lifting mechanism are rotated to connect the limit block through the rotating shaft. When the driven block is in the initial position, the upper end of the limit block abuts against the lower end of the driven block. The rotating shaft is also sleeved with a torsion spring for resetting the limit block.

[0041] To sum up, when the drilling mechanism needs to be moved, the staff only needs to drive the driven block to move linearly in the horizontal direction through the first driving structure, and then drive the lifting mechanism to move linearly along the first slide rail to adjust the spacing between the multiple drilling mechanisms. By cooperating the driven block on the rear side of the lifting mechanism where the different drilling mechanisms are located with the first driving structure, the position of a certain drilling mechanism can be adjusted separately, and the positions of multiple drilling mechanisms can be adjusted at the same time, so as to achieve an automatic and flexible adjustment effect. Compared with manually pulling the positioning bolt for adjustment, the automatic adjustment distance control is more accurate and the adjustment is more convenient, which is conducive to speeding up the adjustment efficiency and improving the yield rate of the finished product.

[0042] The lifting mechanism is used to drive the driven block to rise and fall, so that the driven block can cooperate with the first driving structure and be driven to move by the first driving structure) or the driven block can be separated from the first driving structure and move);

[0043] At the same time, the second driving structure can drive the lifting mechanism to move, so that the lifting mechanism can lift and lower the driven blocks on the rear sides of different lifting mechanisms;

[0044] The lifting mechanism and the second driving structure can be used in conjunction with the first driving structure, thereby achieving the effect of flexibly controlling the displacement of multiple drilling mechanisms;

[0045] Secondly, the linkage structure can produce a transmission effect during the displacement of the driven block, so that the bolt column is close to or away from the first slide rail, thereby limiting or canceling the limit of the lifting mechanism. It can further cooperate with the above-mentioned lifting mechanism to ensure that when the driven block is driven by the first driving structure, the lifting mechanism can smoothly produce horizontal linear displacement along the first slide rail, thereby achieving the ultimate goal of automatically adjusting the position of the drilling mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the three-dimensional structure of the first embodiment of the present application;

[0047] Figure 2 This is a right side view of the first embodiment of the present application;

[0048] Figure 3 This is a side sectional view of the first embodiment of the present application;

[0049] Figure 4 This is a schematic diagram of the lifting mechanism structure of the first embodiment of the present application;

[0050] Figure 5 This is a schematic diagram of the linkage structure of the first implementation mode of this application;

[0051] Figure 6 This is a schematic diagram of the position relationship between the limit block and the driven block in the first implementation mode of the present application;

[0052] Figure 7 This is a schematic diagram of the first embodiment of the present application in which the cross bar drives the wedge block to descend so that the two adjustment blocks move to both sides;

[0053] Figure 8 This is a schematic diagram of the first driving structure and the second driving structure of the first embodiment of the present application driving the driven block and the lifting mechanism to move respectively.

[0054] Description of the numbers in the figure:

[0055] 1. Workbench; 2. Clamp; 3. First slide rail; 4. Lifting mechanism; 5. Drilling mechanism; 6. Controller; 7. Second slide rail; 8. First screw rod; 9. First motor; 10. Second motor; 11. Second screw rod; 12. Electric push rod; 13. Movable block; 14. Electromagnet; 15. Follower block; 16. Connecting column; 17. Cross bar; 18. Adjusting block; 19. Tie column; 20. Wedge block; 21. Connecting rod; 22. Tension spring; 23. Guide rod; 24. Fixed rod; 25. Sliding block; 26. Limiting block. DETAILED DESCRIPTION

[0056] An implementation method of the present application is described in detail below with reference to the accompanying drawings.

[0057] The first implementation method:

[0058] The present invention provides a CNC drilling machine for processing hardware accessories. Figure 1-Figure 5 , including a workbench 1, a fixture 2 and a first slide rail 3 are installed on the upper end of the workbench 1, a lifting mechanism 4 is slidably installed on the first slide rail 3, a drilling mechanism 5 is slidably installed on the side of the lifting mechanism 4 close to the fixture 2, and the fixture 2, the lifting mechanism 4 and the drilling mechanism 5 are all provided with a plurality of and evenly distributed in the horizontal direction, wherein the lifting mechanism 4 and the drilling mechanism 5 are the same in number and correspond one to one, and also include a controller 6, the lifting mechanism 4 and the drilling mechanism 5 adopt corresponding mechanisms commonly used in the prior art and applicable to the present embodiment, respectively used to realize the lifting and lowering control of the drilling mechanism 5 and the drilling processing of the hardware accessories workpiece, the controller 6 also adopts a programmable industrial controller commonly used in the prior art and applicable to the present embodiment, and can control the collaborative operation of the lifting mechanism 4 and the drilling mechanism 5, thereby completing the drilling (or drilling, tapping, and milling in one) operation of the hardware accessories;

[0059] A first driving structure is also installed on the upper end of the workbench 1, and the first driving structure is located on a side of the lifting mechanism 4 away from the drilling mechanism 5;

[0060] A driven block 15 is slidably mounted on one side of the lifting mechanism 4 away from the drilling mechanism 5. The driven block 15 is located above the first driving structure and is driven by the first driving structure to move linearly in the horizontal direction.

[0061] A lifting mechanism is installed above the driven block 15, and the lifting mechanism is used to drive the driven block 15 to rise and fall linearly so that the driven block 15 cooperates with the first driving structure or separates the driven block 15 from the first driving structure;

[0062] A second driving structure is installed above the lifting mechanism, and the second driving structure is used to drive the lifting mechanism to move linearly in a horizontal direction;

[0063] A tie column 19 is installed below the lifting mechanism 4, and the tie column 19 is used to tightly limit the lifting mechanism 4 on the first slide rail 3;

[0064] A linkage structure is installed in the lifting mechanism 4, a part of which is fixed to one side of the driven block 15. When the driven block 15 is lifted or lowered, the linkage structure drives the tether column 19 to press the lifting mechanism 4 against the first slide rail 3 or to move the tether column 19 away from the first slide rail 3 so that the lifting mechanism 4 can be slidably connected to the first slide rail 3.

[0065] Based on the above structure, when the drilling mechanism 5 needs to be moved, the staff only needs to drive the driven block 15 to move linearly in the horizontal direction through the first driving structure, and then drive the lifting mechanism 4 to move linearly along the first slide rail 3 to adjust the spacing between the multiple drilling mechanisms 5. By cooperating the driven block 15 on the rear side of the lifting mechanism 4 where different drilling mechanisms 5 are located with the first driving structure, it is possible to adjust the position of a certain drilling mechanism 5 separately, and it is possible to adjust the positions of multiple drilling mechanisms 5 at the same time, thereby achieving an automated and flexible adjustment effect. Compared with manually pulling the positioning bolt for adjustment, the automated adjustment distance control is more accurate and the adjustment is more convenient, which is conducive to accelerating the adjustment efficiency and improving the yield rate of the finished product.

[0066] The lifting mechanism is used to drive the driven block 15 to move up and down, so that the driven block 15 can cooperate with the first driving structure (that is, the driven block 15 is driven to move by the first driving structure) or separate the driven block 15 from the first driving structure (that is, the first driving structure cannot drive the driven block 15 to move);

[0067] At the same time, the second driving structure can drive the lifting mechanism to move, so that the lifting mechanism can lift and lower the driven blocks 15 at the rear side of different lifting mechanisms 4;

[0068] The lifting mechanism and the second driving structure can be used in conjunction with the first driving structure, thereby achieving the effect of flexibly controlling the displacement of multiple drilling mechanisms 5;

[0069] Secondly, the linkage structure can produce a transmission effect during the displacement of the driven block 15, so that the bolt column 19 is close to or away from the first slide rail 3, thereby limiting or canceling the limit of the lifting mechanism 4, and can further cooperate with the above-mentioned lifting mechanism to ensure that the driven block 15 is driven by the first driving structure. The lifting mechanism 4 can smoothly produce a horizontal linear displacement along the first slide rail 3, thereby achieving the ultimate goal of automatically adjusting the position of the drilling mechanism 5.

[0070] Figure 1 and Figure 3 The first driving structure is shown to include a second motor 10 and a second screw 11. The second motor 10 is fixed to the workbench through a support member, and the second motor 10 is located on one side of the first slide rail 3. One end of the second screw 11 is fixed to the output shaft of the second motor 10, and the other end of the second screw 11 is rotatably connected to the same support member, and the lower end of the support member is fixed to the upper end of the workbench 1.

[0071] A semi-circular internal thread groove is formed at the lower end of the driven block 15 , and the internal thread groove of the driven block 15 is matched with the thread of the second screw rod 11 .

[0072] When the second motor 10 drives the second screw 11 to rotate, and the internal thread groove of the driven block 15 engages with the thread of the second screw 11, that is, the above-mentioned driven block 15 cooperates with the first driving structure, the second screw 11 drives the driven block 15 to move in a straight line, thereby driving the lifting mechanism 4 to move along the first slide rail 3 through the driven block 15, so as to achieve the purpose of driving the drilling mechanism 5 to move through the driven block 15.

[0073] Figure 4 The lifting mechanism is shown to include an electric push rod 12 and an electromagnet 14. The upper end of the electric push rod 12 is fixed to the lower end of the second driving structure, and the piston rod of the electric push rod 12 extends downward; the upper end of the electromagnet 14 is fixed to the lower end of the piston rod of the electric push rod 12, and the electromagnet 14 magnetically attracts the driven block 15 when power is supplied.

[0074] When the electromagnet 14 is energized after the electric push rod 12 descends, the electromagnet 14 attracts the driven block 15, and the electric push rod 12 is started again to cause the piston rod to contract, thereby driving the driven block 15 to move upward, so that the driven block 15 is separated from the second screw rod 11, or the electric push rod 12 and the electromagnet 14 push the driven block 15 to descend so that the internal thread groove of the driven block 15 engages with the thread of the second screw rod 11, thereby completing the position adjustment of the driven block 15.

[0075] Figure 1-Figure 3 The second driving structure is shown to include a movable block 13, a first screw rod 8 and a first motor 9. The lower end of the movable block 13 is fixed to the upper end of the electric push rod 12; one end of the first screw rod 8 is threadedly passed through the middle of the movable block 13 and is rotatably connected to the upper end of the support member at the other end of the second screw rod 11; the first motor 9 is fixed to the support member on one side of the second motor 10, and the output shaft of the first motor 9 is fixed to the other end of the first screw rod 8.

[0076] The first motor 9 rotates to drive the first screw 8 to rotate, and the first screw 8 drives the movable block 13 to slide horizontally and linearly, thereby driving the electric push rod 12 installed at the lower end of the movable block 13 to move horizontally, thereby adjusting the position of the electric push rod 12, and cooperating with the lifting mechanism to achieve the purpose of lifting and lowering the driven block 15 at different positions.

[0077] Figure 4-Figure 5 The linkage structure includes a connecting column 16, a cross bar 17, a wedge block 20 and an adjusting block 18. One side of the connecting column 16 is fixed to one side of the driven block 15; one end of the cross bar 17 is fixed to the side of the connecting column 16 away from the driven block 15; the wedge block 20 is fixed to the lower end of the cross bar 17 and protrudes downward; the adjusting block 18 is fixed to the upper end of the bolt column 19 through a fixing rod 24;

[0078] Two adjusting blocks 18 and two bolts 19 are provided and correspond to each other. There is a gap between the two adjusting blocks 18, and the wedge block 20 is located above the gap between the two adjusting blocks 18;

[0079] Both ends of the tie column 19 slide through the lifting mechanism 4 and one end thereof abuts against the inner side of the first slide rail 3;

[0080] The two adjusting blocks 18 are elastically connected via a tension spring 22 .

[0081] When the driven block 15 descends, the connecting column 16 and the cross bar 17 descend accordingly, thereby driving the wedge block 20 to descend. When the wedge block 20 descends, the inclined surfaces on both sides squeeze the two adjusting blocks 18 respectively, so that the two adjusting blocks 18 move to the side away from the wedge block 20. The two adjusting blocks 18 drive the two bolting columns 19 to slide, so that one end of the two bolting columns 19 leaves the inner side of the first slide rail 3, so as to facilitate the subsequent first driving structure to drive the driven block 15 to slide, and then adjust the position of the lifting mechanism 4 and the drilling mechanism 5; when the driven block 15 rises, the connecting column 16 and the cross bar 17 rise accordingly, thereby driving the wedge block 20 to rise and make the moving wedge block 20 leave the two adjusting blocks 18. At this time, the two adjusting blocks 18 approach each other under the action of the tension spring 22, and drive the two bolting columns 19 to slide again and press against the inner side of the first slide rail 3, thereby positioning the lifting mechanism 4 and the drilling mechanism 5 after the position adjustment.

[0082] Figure 3 and Figure 5 It is shown that a guide rod 23 is fixed between the side walls on both sides of the lifting mechanism 4, and the two ends of the guide rod 23 slide through the two adjusting blocks 18, and the tension spring 22 is sleeved on the guide rod 23. The guide rod 23 can stabilize and guide the movement of the two adjusting blocks 18; a connecting rod 21 is rotatably connected to one side of the wedge block 20, and the other end of the connecting rod 21 is rotatably connected to the upper end of the adjusting block 18. The connecting rod 21 is tilted and has an inclination direction opposite to that of the inclined surfaces on both sides of the wedge block 20. The connecting rod 21 can drive the adjusting block 18 to move during the rising or falling process of the wedge block 20, so that after the wedge block 20 rises, the two adjusting blocks 18 drive the two bolt columns 19 to actively approach and press against the inner side of the first slide rail 3, making the limit more reliable.

[0083] It should be noted that the tension spring 22 and the connecting rod 21 can be used simultaneously or separately, and both can achieve the purpose of automatic limiting and automatic disengagement.

[0084] Figure 3-Figure 4 It is shown that a slider 25 is fixed to the side of the movable block 13 away from the lifting mechanism 4;

[0085] A second slide rail 7 is fixed above the workbench 1 through a support member. The second slide rail 7 is located on the side of the lifting mechanism 4 away from the drilling mechanism 5. The slider 25 is slidably connected to the second slide rail 7 to facilitate the sliding of the movable block 13 along the first screw rod 8.

[0086] Figure 6 It is shown that a sliding hole is provided on one side of the lifting mechanism 4 close to the driven block 15 for the driven block 15 to connect and slide with the connecting column 16;

[0087] Both sides of the sliding hole of the lifting mechanism 4 are rotatably connected to the limit block 26 through the rotating shaft. When the driven block 15 is in the initial position, the upper end of the limit block 26 abuts against the lower end of the driven block 15. The rotating shaft is also provided with a torsion spring (not shown in the figure) for resetting the limit block 26. When the electric push rod 12 and the electromagnet 14 do not work on the driven block 15, the limit block 26 can limit the driven block 15 so that the driven block 15 will not slide down under the influence of gravity.

[0088] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. A CNC drilling machine for processing hardware accessories, comprising a workbench (1), a fixture (2) and a first slide rail (3) being mounted on the upper end of the workbench (1), a lifting mechanism (4) being slidably mounted on the first slide rail (3), a drilling mechanism (5) being slidably mounted on a side of the lifting mechanism (4) close to the fixture (2), and characterized in that: A first driving structure is also installed on the upper end of the workbench (1), and the first driving structure is located on a side of the lifting mechanism (4) away from the drilling mechanism (5); A driven block (15) is slidably mounted on a side of the lifting mechanism (4) away from the drilling mechanism (5); the driven block (15) is located above the first driving structure and is driven by the first driving structure to move linearly in a horizontal direction; A lifting mechanism is installed above the driven block (15), and the lifting mechanism is used to drive the driven block (15) to move up and down linearly so that the driven block (15) cooperates with the first driving structure or separates the driven block (15) from the first driving structure; A second driving structure is installed above the lifting mechanism, and the second driving structure is used to drive the lifting mechanism to move linearly in a horizontal direction; A tying column (19) is installed below the lifting mechanism (4), and the tying column (19) is used to tightly and position the lifting mechanism (4) on the first slide rail (3); A linkage structure is installed in the lifting mechanism (4), a part of which is fixed to one side of the driven block (15). When the driven block (15) is lifted or lowered, the linkage structure drives the tether column (19) to tightly limit the lifting mechanism (4) on the first slide rail (3) or to move the tether column (19) away from the first slide rail (3) so that the lifting mechanism (4) and the first slide rail (3) are slidably connected.

2. The CNC drilling machine for hardware accessories processing according to claim 1, characterized in that: The first driving structure comprises: a second motor (10), the second motor (10) being fixed to the workbench (1) via a support member, the second motor (10) being located on one side of the first slide rail (3); a second screw rod (11), one end of the second screw rod (11) being fixed to the output shaft of the second motor (10), the other end of the second screw rod (11) being rotatably connected to a similar support member, the lower end of the support member being fixed to the upper end of the workbench (1); A semi-annular internal thread groove is formed at the lower end of the driven block (15), and the internal thread groove of the driven block (15) is adapted to the thread of the second screw rod (11).

3. The CNC drilling machine for hardware accessories processing according to claim 2, characterized in that: The lifting mechanism comprises: An electric push rod (12), the upper end of the electric push rod (12) being fixed to the lower end of the second drive structure, and the piston rod of the electric push rod (12) extending downward; An electromagnet (14), wherein the upper end of the electromagnet (14) is fixed to the lower end of the piston rod of the electric push rod (12), and the electromagnet (14) magnetically attracts the driven block (15) when power is supplied.

4. The CNC drilling machine for hardware accessories processing according to claim 3, characterized in that: The second driving structure comprises: A movable block (13), the lower end of the movable block (13) being fixed to the upper end of the electric push rod (12); A first screw rod (8), wherein one end of the first screw rod (8) is threadedly inserted through the middle of the movable block (13) and is rotatably connected to the upper end of the support member at the other end of the second screw rod (11); A first motor (9), wherein the first motor (9) is fixed to a support member on one side of the second motor (10), and an output shaft of the first motor (9) is fixed to the other end of the first screw rod (8).

5. The CNC drilling machine for hardware accessories processing according to claim 1, characterized in that: The linkage structure includes: A connecting column (16), one side of the connecting column (16) being fixed to one side of the driven block (15); A cross bar (17), one end of which is fixed to a side of the connecting column (16) away from the driven block (15); A wedge block (20), the wedge block (20) being fixed to the lower end of the cross bar (17) and protruding downward; An adjusting block (18), wherein the adjusting block (18) is fixed to the upper end of the fastening column (19) via a fixing rod (24); The adjusting blocks (18) and the bolting columns (19) are each provided with two and correspond to each other, a gap exists between the two adjusting blocks (18), and the wedge block (20) is located above the gap between the two adjusting blocks (18); Both ends of the tie column (19) slide through the lifting mechanism (4) and one end thereof abuts against the inner side of the first slide rail (3); The two adjustment blocks (18) are elastically connected via a tension spring (22).

6. The CNC drilling machine for hardware accessories processing according to claim 5, characterized in that: A guide rod (23) is fixed between the inner side walls of the lifting mechanism (4), and the two ends of the guide rod (23) slide through the two adjustment blocks (18), and the tension spring (22) is sleeved on the guide rod (23).

7. The CNC drilling machine for hardware accessories processing according to claim 6, characterized in that: One side of the wedge block (20) is rotatably connected to one end of a connecting rod (21), and the other end of the connecting rod (21) is rotatably connected to the upper end of the adjustment block (18). The connecting rod (21) is arranged to be inclined and has an inclination direction opposite to that of the inclined surfaces on both sides of the wedge block (20).

8. The CNC drilling machine for hardware accessories processing according to claim 4, characterized in that: A sliding block (25) is fixed on a side of the movable block (13) away from the lifting mechanism (4); A second slide rail (7) is fixed above the workbench (1) via a support member. The second slide rail (7) is located on a side of the lifting mechanism (4) away from the drilling mechanism (5). The sliding block (25) is slidably connected to the second slide rail (7).

9. The CNC drilling machine for hardware accessories processing according to claim 5, characterized in that: A sliding hole for connecting and sliding the driven block (15) and the connecting column (16) is provided on a side of the lifting mechanism (4) close to the driven block (15); Both sides of the sliding hole of the lifting mechanism (4) are rotatably connected to the limit block (26) via a rotating shaft; when the driven block (15) is located at the initial position, the upper end of the limit block (26) abuts against the lower end of the driven block (15); and a torsion spring for returning the limit block (26) to its original position is sleeved on the rotating shaft.

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